There are / were several artists using Rat Salad moniker. "Rat Salad" of course being a song on Black Sabbath's "Paranoid" album.
A short lived doom metal band by Al Morris III (Force, Iron Man) with female vocals.
The one that recorded "The Golden Playground" (1994) was a Swedish hard rock band. There is also a Black Sabbath tribute band under this name.
The third artist you can see on last.fm (at the moment of writing) is an industrial rock / metal studio project. Home page: http://dehumanizer.org